Reversing-valve for heating-furnaces.



J. R. GEORGE.

REVBRSING VALVE FOR HEATING FURNACES. APILIOATION FILED FEB. 21, 1913.

1,093,%'!7., Patented Apr. 14, 1914 2 SHEETS-SHEET 1.

J. R. GEORGE. REVEBSING VALVE FOR HEATING FURNACES. APPLICATION FILED FEB. 21, 1913.

1,093,0&'?, Patented Apr. 14, 1914.

2 SHEETS-SHEET 2.

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1%! fovn y JEROME R. GEORGE, 0F WORCESTER, MASSACHUSETTS, ASSIGNOR TO MORGAN CONSTRUCTION COMPANY, OF MASSACHUSETTS.

OF WORCESTER, MASSACHUSETTS, A CORPORATIQN REVERSING-VALVE FOR HEATm'G-FURNACES.

Specification of Letters Patent.

Patented Apr. 14, tom.

Application filed'lebruary 21, 1913. Serial No. 749,791.

To all whom it may concern:

Be it known that I, JEROME R. GEORGE, a citizen of the- United States, residing at Vorcester, in the county of-Worcester and Commonwealth of Massachusetts, have invented a new and useful Improvement in Reversing-Valves for Heating-Furnaces, of which the following is a specification, accompanied by drawings forming a part of e same. 4

My present invention relates to that type of reversing valves which are employed in metal heating furnaces for changing the direction of air and gas through the flues or conduits between the furnaces, the gas producer, and the chimney or stack, such for example as that shown and described in. the United States patent issued to Julius A. Dyblie, January 14, 1902, No. 691,251.

The objects of my invention are to simplify the construction, to provide means for air coolin the walls of the reversing valve; to maintain the walls in a dry condition by eliminating the use of water for cooling and thereby obviate the injurious effects upon the metal walls incident to the use of water cooled valves; and these objects, among others, I accomplish by lining the metal Walls of the valve with brick and providing means for air cooling the brick lined walls, as hereinafter described, the novel features being pointed out in the annexed claims.

Referring to the accompanying drawings, Figure 1 represents a side elevation of a reversing valve embodying my invention. Fig. 2 is a central vertical section, and Fig. 3 is a horizontal section on the plane of the broken lines 33, Figs. 1 and 2.

Similar reference characters refer to similar parts in the different figures.

Referring to the drawings, 1 denotes a circular shell or casing having its lower edge normally resting in a trough or pan 2, containing water, by which the lower edge of the casing is Water sealed. The casing 1 supports a three armed spider 3 having equ1- distant arms l, 5 and 6 dividing the circle into threev segmental sections. Mounted upon the center of the spider is a skewback 7 consisting of a hollow water cooled casting erected upon the circular shell or casmgl. Extending, a little more than half of the was inclosed as 1s circle is a shell or casing 7. Connecting the skewback 7 and the ends of the casing 7* are the partitions 8 and 9, with the segmental sect10n 10 outside the partitions and the segmental sectlons 11 and 12 inclosed between the partitions 8 and 9 and the circular casing 7 inclosing a single chamber 13. The chamber 13 communicates with two of the adjacent flues of the mace, enabling gaseous fuel to pass from one fine over the arm 5 of the spider into the nextflue as indicated by the arrow at. r

A cover 14 is placed over the segmental sections 11 and 12, thereby inclosing the gas chamber 13. The lower end of the segmental section 10 is provided with a bottom 15 having an opening therethrough', closed by a hinged valve 16 by which air is admitted through one of the furnace flues, represented in Fig. 2 at 17. The hinged valve 16 is opened and closed by the operator by means of a cord 18, allowing the amount of air passing into the flue 17 to be controlled at will. The walls of the gas chamber 13 are lined with brick 19. The partitions 8 and 9 are curved outwardly from the chamber 13 in order to make their brick lining outwardly arched or concave side'of the gas chamber 13. The inner ends of the brick linings of the'partitions 8 and 9 rest against the skewback 7, as shown in Fig. 3. The lower edges of each course of bricks forming the vertical lining of the chamber 13 is provided with an outwardly projecting flange 20, forming a series of air spaces or pockets 21, horizontally separated by the flanges 20. The brick lining 22 of the cover 14 is supported by the flanges of inverted T-bars 23, said flanges entering recesses in the opposing edges of the bricks 22. The skewback 7 1s hollow and water is admitted to the bottom of the skewback through a pipe 24 escaping through an overflow pipe 25.

As the segmental section 10 is entirely open at the top air has free access to the outer sides of the partitions 8 and 9, preserving them from the injurious efi'ects of heated air or gases to which they would be subject if the to of the segmental section 10 usually. the case in reversing valves of this description. The air pockets 21 provide a nonconducting medium which protects the metal casing of the chamber 13 from the injurious eflects of heat radiated from within. Suitable means are in Fig. 1, for counter alancing the weight of the reversing valve, for raising and lowering the same, and for rotating the same through partial revolution whereby the position of the hinged valve 16 can be changed alternately from one flue to another, thereby clearin the flues from the deposit occasioned the passage of fuel gas.

The s ewback 7 is provided at its lower end with a bearing for a trunnion 26 and having a coincident axis is a trunnion 2 at the top of the valve about which the valve is partially rotated back and forth to effect a communication between different fiues in the manner common in reversing valves of this class.

Tie bars 28 and 29, united to the outer edges of the partitions 8 and 9, hold the circular casing 7 from'spreading. The shell or casing 1 opposite the circular casing 7 is connected with the framework 30 by a tie strip 31. The hinged valve 16 is emloyed to admit air through the flue which,

or the time, is beneath the segmental section. In case all the flues are employed for the passage of gaseous fuel, the valve 16 may be omitted and the bottom 15 made without an opening.

I claim,

1. The combination with the series of air and gas fines of a heating furnace, of a reversing valve comprising an outer casing, vertically divided by partitions into segmental sections, with one of said sections closed at the top inclosing a chamber communicating with and connecting two adjacent fiues for the passage of gas, .a brick lining for the top and sides of said chamber, another of said sections being open at the top and outer side for the admission of air against said vertical partitions, said section provided with a closure having a valve controlled air passagecommunicating with one of the fiues of the furnace.

2. A reversing valve for a heating furnace, comprising a shell or casing inclosing a chamber connecting two adjacent fines for the passage of gaseous fuel, having a central vertical skewback, a brick lined wall curved in a circular arc and two brick lined walls connecting the ends of said circular arc and said skewback, said connecting walls being curved in the opposite direction to said circular arc.

3. A reversing valve for a heating furnace comprising a shell, a hood carried by sai shell and covering a segmental portion of the space inclosed thereby, the remainder of the space inclosed by said shell being cov- 5 ered y a plate lying flush with the upper rovided, as indicated segmental sections,

edge of the shell, whereby the hood is exposed on all sides to the atmosphere.

4. The combination with a series of air and gas fines of a heating furnace, of a re versing valve comprising a cylindrical shell, a hood inclosing a portion of said shell to form a segmental chamber in communication with two of said flues, the remaining portion of said shell constituting an air passage to a single flue, and being uninclosed,-whereby tlip hood is exposed on all sides to the atmosere.

p 5. A reversing valve for a heating furnace, comprising a cylindrical shell, a central skew-back carried by said shell, and support ing the ends of a pair of arched walls, and means for cooling said skew-back.

6. A reversing valve for a heating furnace, comprising a cylindrical shell having partitions dividing its interior into segmental sections, a covered casing havin one vertical wall carried by the wall 0 said shell, and havin other vertical walls carried by said partitions, said casing forming a segmental chamber inclosing two of said segmental sections, and a cover for the remaining segmental section.

A reversing valve for a heating furnace, comprising a cylindrical shell, having partitions dividing its interior into segmental sections, a casing provided with vertical side walls rising from the wall of said casing and from two of said partitions and providing a segmental chamber inclosing two of said and a valved closure plate for the remaining segmental section of the shell.

8. A reversing valve for a heating furnace, comprising a cylindrical shell having partitions dividing its interior into segmental sections, a central vertical skew-back rising from said partitions, a vertical wall formin an extension of a portion of the shell, and two walls connecting the ends of said first-. mentioned wall to said skew-back, all of said walls forming a chamber inclosing two of the segmental sections of said shell.

9. A reversing valve for a heating furnace, comprising a cylindrical shell, a central skew-back carried thereby, and having at one end a bearing for a trunnion, and means secured to the other end .of said skew-back for carrying a second trunnion in axial alinement with said first-mentioned trunnion.

10. A reversing valve-for a heating furnace, comprisin a cylindrical shell, a casing carried by said s ell having brick lined walls inclosing a segmental portion'of the space inclosed by said shell, means .for air-cooling said walls, and means for directing a current of air through the remainder of the space inclosed by said shell, whereby the adjacent walls of the said casing are cooled.

11. A reversing valve for a heating furnace, comprising a cylindrical shell, a cen-\ tral vertical skew-back carried by said shell, a casing inclosing a segmental section of the space inclosed by said shell and comprising a vertical wall rising from the wall of said shell, and two vertical walls extending from said skew-back to the ends of said nrst-mentioned wall, each of said last-mentioned Dated this 12th day of February, 1913.

JEROME R. GEORGE.

Witnesses PENELOPE Gommnmon, NELLm WHALEN. 

